LM5069EVAL: max power output?

Chen Alex1

Genius 4065 points

Part Number: LM5069EVAL

Tool/software:

hi sir

I bought the LM5069EVB for LED tube control

we need the max power is 300w, but 230w limit

may i know which parameter need be adjust?

thanks

2 months ago

0 Avishek Pal 2 months ago

TI__Mastermind 41060 points

Thanks for reaching out.

The EVM is designed for 5.5A typical current limit. This can't be adjusted in this board.

0 Chen Alex1 2 months ago in reply to Avishek Pal

Genius 4065 points

hi Pal

how the adjust the current limit?

need over 6 A

thanks

0 Avishek Pal 2 months ago in reply to Chen Alex1

TI__Mastermind 41060 points

It's increased by reducing the value of the current sense resistance. But in this board the current sense resistance cannot be further decreased. This will violate the MOSFET SOA margin, which can damage the MOSFET during power up into short and output hot short events.

0 Chen Alex1 2 months ago in reply to Avishek Pal

Genius 4065 points

hi Pal

Please advise the value of the current sense resistance, and how to achieve the 300w output, how to adjust the MOSFET SOA

thanks

0 Avishek Pal 2 months ago in reply to Chen Alex1

TI__Mastermind 41060 points

Please fill out the design calculator and share for review.

Power management

Power management forum

LM5069EVAL: max power output?